Tubular-magazine firearm.



No. 819,550. PATENTED MAY 1, 1906.

T. c. JOHNSON. TUBULAR MAGAZINE FIREARM.

APPLICATION FILED JAN.- 8, 1906.

thefr THOMAS C. JOHNSON, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO THEHAVEN, CONNECTICUT,

TUBULAR-MAGAZINE FIREARM.

Application filed January 8,

Patented May 1, 1906.

Haven, in the county of New Haven and I State of Connecticut, haveinvented a new and useful Improvement in Tubular-Magazine Firearms; andI do hereby declare the following, when taken in connection with theaccompanyin drawings and the figures of reference marIied thereon, to bea full, clear, and exact description of the same, and which saiddrawings constitute part of this specification, and re resent, in

Figure 1, a roken view, partlyin side elevation and partly in section,of a gun containing myimprovement Fig. 2, a detached front view of thefore arm and magazine with the nut removed; Fig. 3, a detached insideview My invention relates to an improvement 11 that class oftubular-magazine firearms in which the magazine is furnished at itsfront end with a fore-arm tip in the form of a nut, the object being toprovide a simple and effective yielding nut-lock for preventing the nutfrom jarring loose in firing.

With these ends in view my invention consists in a firearm havingcertain details of construction and combinations of parts, as will behereinafter described, and pointed out in theclaims.

In carr 'ng out my invention as herein shown I orm a circular series ofshallow locking-notches 2 in the front face of a ringlike tenon 3, setinto and secured within but projecting forward beyond the front end of awrought-metal fore-arm 4, the rear end of which is furnished with aU-shaped tenonpiece 5, set into and secured within but proectingrearward beyond the fore-arm and having a rib or tenon 6 to enter agroove 7 in ont of the gun frame or receiver 8. The locking-notches 2are engaged by a yielding nut lock consisting of a friction-plunger 9,having an enlarged base and located in a circular chamber 10 in a nut11, constituting, as it were, the fore-arm tip. The said plunger isyieldingly held in place by a coiled spring 12, located in the chamber10, in which it is co edbymeans ofascrew 13. Thesaidnut is internallythreaded, and thus adapted to be screwed almost home, the rounded nose.of

the yielding plunger 9 begins to ride over the partitions between thenotches 2 against the tension of the spring 12, whi

tension as the nut is turned home until, finally tension of the springhas been so much in- I creased that it will old the plunger inengagement with one of the locking-notches with force enough to preventthe nut from being jarred loose in firing the gun but the power of thespring is not, of course, enough to prevent the spring from yielding andthe plunger from riding from notch to notch when manual force is appliedfor unscrewing the nut.

would therefore have it understood that I do bination with the fore-armthereof, of a tubular magazine passing through the said forearm, afore-arm tip in the form of a nut applied to the front end of ingnut-lock mounted in the nut and coacting with the front end of thefore-arm to prevent the nut from jarring loose.

2. In a tubular-magazine firearm, the combination with the fore-armthereof, of a tubular magazine passing through the said forearm, afore-arm tip in the form of a nut applied to the front end of themagazine, a ringlike tenon-piece mounted in the front end of thefore-arm, and a yielding nut-lock mounted in the said nut and coactingwith the said Itenon-piece to prevent the nut from jarring oose.

3. In a tubular-magazine firearm, the combination with a wrought-metalfore-arm, of a the front end of the magazine, a ring-1ike specificationin the presence of two subscribtenon mounted in the front end of the ingWitnesses. Wrought-metal fore-arm and formed with a circular series oflooking-notches, and a yield- THOMAS JOHNSON 5 ing nut-lock coactingwith the said notches Witnesses:

to revent the nut from jarring loo se. DANIEL H. VEADER,

n testimony whereof I have slgned this HERBERT F. BEEBE.

